Hinge structure and electronic device including the same

A hinge structure, comprising:

• at least one fixed bracket including a first through-hole and a second through-hole formed therein;
• a first connecting shaft extending in a first direction through an interior of the first through-hole and including a first support part formed on an end portion of the first connecting shaft and facing the first direction, a second support part formed on the end portion of the first connecting shaft facing a second direction opposite to the first direction, and a first gear formed between the first support part and the second support part;
• a first rotary bracket disposed between the at least one fixed bracket and the first support part, the first rotary bracket including a first circular arc-shaped opening through which the first connecting shaft passes, and a first internal gear formed on an inner wall of the first circular arc-shaped opening and engaged with the first gear, wherein the first rotary bracket rotates about a first virtual axis passing through the center of a circular arc of the first circular arc-shaped opening;
• a first elastic member, at least part of which is disposed in the first through-hole, the first elastic member being formed such that one side of the first elastic member is supported by the second support part and an opposite side of the first elastic member presses the at least one fixed bracket towards the first rotary bracket;
• a second connecting shaft extending in the second direction through the interior of the second through-hole and including a third support part formed on an end portion of the second connecting shaft facing the second direction, a fourth support part formed on the end portion of the second connecting shaft and facing the first direction, and a second gear formed between the third support part and the fourth support part and connected with the first gear;
• a second rotary bracket disposed between the at least one fixed bracket and the third support part, the second rotary bracket including a second circular arc-shaped opening through which the second connecting shaft passes and a second internal gear formed on an inner wall of the second circular arc-shaped opening and engaged with the second gear, wherein the second rotary bracket rotates about a second virtual axis passing through the center of a circular arc of the second circular arc-shaped opening;
• and
• a second elastic member, at least part of which is disposed in the second through-hole, the second elastic member being formed such that one side of the second elastic member is supported by the fourth support part and an opposite side of the second elastic member presses the at least one fixed bracket towards the second rotary bracket, wherein the at least one fixed bracket is disposed between the first rotary bracket and the second rotary bracket.